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A plugger for coiled tubing operation

A plug-and-operate technology, applied in wellbore/well components, sealing/packaging, earth-moving drilling, etc., can solve the problems of inaccurate positioning, single use of plugs, small application range, etc., to increase practicability, accurate positioning

Active Publication Date: 2020-11-06
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Coiled tubing operations play a vital role in the exploration and development of oil and gas fields, and plugs are important components in coiled tubing operations. Conventional plugs cannot automatically identify the setting surface and cannot be positioned accurately, which affects continuous The efficiency of tubing operations. In addition, conventional plugs have a single purpose and are only used in well washing work, with a small range of applications

Method used

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  • A plugger for coiled tubing operation
  • A plugger for coiled tubing operation
  • A plugger for coiled tubing operation

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Embodiment Construction

[0035]In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0036] Embodiments of the present invention provide a plugging device for coiled tubing operations, such as figure 1 As shown, it includes a plug body 1, an elastic sleeve 2, a thrust ring 6, a limit device 3, a first positioning cylinder 4 and a second positioning cylinder 5, and the first positioning cylinder 4 and the second positioning cylinder 5 is fixed on the plug body 1, the first positioning cylinder 4 is provided with a first positioning claw 41, the second positioning cylinder 5 is provided with a second positioning claw 51, and the thrust ring 6 and the limiting d...

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Abstract

The embodiment of the invention provides a blanking plug matched with coiled tubing for operation. The blanking plug comprises a blanking plug body, an elastic shaft sleeve, a thrust collar, a limiting device, a first positioning barrel, a second positioning barrel and a reset device. A first positioning elastic gripper and a second positioning elastic gripper enable the blanking plug to completesetting only on a specific profile. The thrust collar and the limiting device are fixed to the blanking plug body through shear pins. The elastic shaft sleeve is movably arranged in the blanking plugbody. The upper end of the elastic shaft sleeve is matched with the first positioning elastic gripper, a step surface is arranged in the middle of the elastic shaft sleeve, and a limiting part is arranged at the lower end of the elastic shaft sleeve. The first positioning elastic gripper enables the elastic shaft sleeve and the second positioning barrel to be relatively fixed, or enables the elastic shaft sleeve and the second positioning barrel to be relatively displaced so as to enable the step surface to abut against the second positioning elastic gripper and enable the limiting part and the limiting device to be matched for limiting, so that the blanking plug form setting, after operation is completed, coiled tubing lifts the blanking plug through a putting rod to enable the blanking plug to conduct unsetting, and the blanking plug is taken out finally; and the reset device can recover the elastic shaft sleeve to the initial position when the blanking plug is lifted, so that the position of the elastic shaft sleeve is fixed.

Description

technical field [0001] The invention relates to the field of oil wells, in particular to a plug for working with coiled tubing. Background technique [0002] Coiled tubing operations play a vital role in the exploration and development of oil and gas fields, and plugs are important components in coiled tubing operations. Conventional plugs cannot automatically identify the setting surface and cannot be positioned accurately, which affects continuous The efficiency of tubing operations, in addition, conventional plugs have a single purpose and are only used in well washing work, and their application range is small. Contents of the invention [0003] In order to solve the above technical problems, the embodiment of the present invention provides a plug for coiled tubing operation, the plug can automatically identify the setting profile, accurate positioning, reliable operation, widely used in well washing, drilling, completion and Well logging and other fields. [0004] I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/12
CPCE21B33/1208
Inventor 邢海军黄侠褚建国代向辉张博李翔段凯滨王景浩郭宏峰
Owner CHINA NAT OFFSHORE OIL CORP
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